Sewer-block.



N. W. TRAUTNER.

SEWER BLOCK.

APPLICATION FILED OCT. 30, ms.

Patented Dec. 26, 1916.

Attorney:

UNITED STATES PATENT OFFICE.

NIC W. TRAUTNER, 0F RED WING, MINNESOTA, AS SIGNOR TB RED WING SEWERPIPE COMPANY, OF RED WING, MINNESOTA.

SEWER-BLOCK Specification 0! Letters Patent.

IatntedDec. 26, 1916.

I 0 all. whom it may concern Be it known that 1, N10 W. TnAU'rNna, acitizen of the United States, residing at Red Wing, in the county ofGoodhue and State of llliunesota, have invented a new and usefulSewer-Block. of which the following is a specification.

The device forming the subject matter of this application is a blockadapted to be used in the making of sewers, in the formation of roofs,and for other purposes.

The invention aims to improve the end joint of the block and toconstruct an end joint which may be' fashioned readily in a plastic,cellular block of that sort which is made in a press, the ends of theblock being cut into shape. I

Another object of the invention is to provide a block of thctypedescribed which, when embodied in a sewer or like structure, will resistinternal pressure as well as external pressure.

It is within the province of the disclosure to improve generally and toenhance the utility of devices of that type to which the presentinvention appertains.

With the above and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrimgenicut of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the in \entio'n heroin disclosed can be made within thescope of what is claimed, without departing from the spirit of theinvention.

In the accompanying drawing :Figure1 shows in end elevation, a series ofinterlocked parts constructed in accorda hce with the present invention;Fig. 2 is a top plan of" the structure shown in Pig/1; Fig. 3 15 .t-

'icrspective showing one of he blocks Fig? 4 is a cross section on thelac oi Fig. 1; Fig. 5 is a cross section on the line 5-5 of Fig. 1; Fig.6 is a fragmental end elevation showing two of the locks in thepositions which the same will assume when the ends of the bloelr arealined; Fig. 7 is a side elevation of the structure shown in Fig. 6;Fig. 8 is a fragmental persgpective showing a. portion of the opposite ego of the bloc from that which appear-s at the top of Fig. 3. The blockforming one subject matter of this application preferably is fashionedfrom clay, or clay and concrete and is made in aipress, the joints beingcut to proper shape. The block is denoted by the numeral 1 and isprovided with a lurality of intermediate openings 2 extenc edlongitudinally of the block and prolonged entirely there- 60 through.Between the openings 2 and'the" inner and outer surfaces of the blockare formed outer openings 3 in radial alinement with the openings 2.'Ihe construction of the block therefore is such that the sameenr 05bodies spaced inner walls 4: and outer walls 5 spaced from the innerwalls. Extended between the outer wallsfii and the inner walls t arelongitudin ll" ribs 6, the inner walls 4 being held infs' "on relationby ribs '10 7, the ribs 6 and '7 being in alinement transversely of theblock.

In the longitudinal edge of the block 1 there is formed a groove 8 andin the opposite longitudinal cdge of the block there is formed a, tongue9', the tongue 9 being shaped to be received in the groove 8 of a. likeblock. As indicated at 10, the tongue 9 is beveled so as to compact themortar in the groove 8 and not force the mortar out of the groove. Atone end of the block there is formed a tongue 11 defining shoulders 12,the tongue 11 being provided with a longi-- tudinal opening l-l'. At theopposite end of the block there is formed a groove 15 adapted atdintervals is reinforced by a continuous an unbroken cross wall, as willbe understoo clearly when Fig. 3 is compared with Fin. 5. The tongues 9on the longitudinal edes of the blocks are fashioned. like the tongues11 on the ends of the blocks, and

consequently, the blocks in adjacent circumfercntial courses may be laidwith their ends alined. as indicated in Fig. 7 or with their ends inbreak joint order, as clearlyindicated in Fig. 2.

Having thus described the invention, what is claimed is In a device ofthe class described, a block having a s ide groove along onelongitudinal edge and provided along its opposite longitudinal edge witha side tongue adapted to of the block, as clearly 90

